NOTE: If you have jumper pins for the "Clear CMOS", these are the steps.
1.) Power the machine off, unplug the machine, and hold down the power button for 5 seconds to release static charge.
2.) User a flat head screw driver to tap both "Clear CMOS" pins for 10 seconds.
3.) Remove screw driver from case/motherboard, plug the PC back in and turn it back on. Your CMOS should be restored to default.
This will also work if you bricked your BIOS from overclocking as well.